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Comprehensive parameter evaluation method for double sweet spot evaluation of tight sandstone reservoirs

A technology of tight sandstone reservoir and evaluation method, which is applied in the field of comprehensive parameter evaluation of double sweet spot evaluation of tight sandstone reservoir, and can solve the problems of ambiguity and inconsistency in artificial judgment.

Active Publication Date: 2021-11-09
PEKING UNIV
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Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a three-dimensional geological model based on multi-parameters, introduces analytic hierarchy process and fuzzy comprehensive evaluation, and carries out transformation and fusion that meet the evaluation requirements of "double sweet spots", which solves the fuzziness of manual judgment, Inconsistency and other issues, a comprehensive parameter evaluation method for double sweet spot evaluation of tight sandstone reservoirs that improves the reliability of "sweet spot" evaluation

Method used

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Embodiment Construction

[0035] The comprehensive parameter evaluation method of tight sandstone reservoir double sweet spot evaluation of the present invention comprises the following steps:

[0036] 1) Establish a three-dimensional geological structure model

[0037] The 3D geological structure model visually displays the geological exploration data and logging data in the form of 3D graphics, which can fully and accurately express the geological environment and the 3D spatial distribution of the strata, and is an important content for describing the distribution of reservoirs. Three-dimensional geological modeling with well data as the source data is the primary task of the double-sweet spot comprehensive prediction method. With the well logging data as the source data, the reservoir is subdivided into single sand bodies based on relevant geological exploration data to obtain layered data of the reservoir. . Analyze and study the stratigraphic framework and skeleton sand body, use the logging data...

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Abstract

The present invention provides a comprehensive parameter evaluation method for double sweet spot evaluation of tight sandstone reservoirs, comprising the following steps: 1) establishing a three-dimensional geological structure model; 2) establishing a three-dimensional geological attribute model; 3) selecting evaluation indicators; 4) selecting evaluation methods , including analytic hierarchy process and fuzzy comprehensive discriminant method. This patent mainly focuses on the multi-information fusion of geological and engineering "double sweet spots". Based on the multi-parameter 3D geological model, AHP and fuzzy comprehensive evaluation are introduced, and the transformation and fusion that meet the evaluation requirements of "double sweet spots" is carried out, which solves the problem of manual judgment The ambiguity, inconsistency and other problems of "sweet spots" improve the reliability of "sweet spot" evaluation.

Description

technical field [0001] The invention relates to a comprehensive parameter evaluation method, especially a multi-parameter three-dimensional geological model, which introduces analytic hierarchy process and fuzzy comprehensive evaluation, and carries out transformation and fusion in line with the evaluation requirements of "double sweet spot", which solves the problem of manual judgment A comprehensive parameter evaluation method for double sweet spot evaluation of tight sandstone reservoirs that improves the reliability of "sweet spot" evaluation. Background technique [0002] In recent years, the production of conventional oil and gas exploration has suffered a serious decline, and the world is undergoing a major transformation from traditional oil and gas to unconventional oil and gas development. After shale gas, tight sandstone oil has become another new hotspot in the exploration and development of unconventional oil and gas in the world. It is hailed as "black gold" by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor 刘钰洋潘懋刘庆彬李兆亮张驰
Owner PEKING UNIV